JPH0260667A - Automatic water supplying structure for fire hydrant - Google Patents

Abstract

PURPOSE:To surely discharge water from a fire hydrant without unwinding the hose of the fire hydrant by drilling a main water supplying port and an auxiliary water supplying port at the right and left side parts of the circumferential wall of a fixed shaft and opening and closing the auxiliary water supplying port at the other edge part of the fixed shaft. CONSTITUTION:When a hydrant is close to a fire spot, under a state in which a hose 3 is wound around a drum 2, a valve handle 24 of a valve opening and closing device M provided at the other edge of a fixed shaft 4 is operated, a valve seat 22 of an internal passage 6 between a main water supplying port 8 and an auxiliary water supplying port 8a is opened, and feed water from the internal passage 6 is supplied from the auxiliary water supplying port 8a through space S between the fixed shaft 4 and a rotary drum 5 to a discharging port 19 of the rotary drum 5. Consequently, even when the main water supplying port 8 of the fixed shaft 4 is blocked by a sliding drum 11, the internal passage 6 and the discharging port 19 of the rotary drum 5 are made into a communicating state by the valve handle 24, and the feed water from the internal passage 6 is supplied through the auxiliary water supplying port 8a to the discharging port 19 of the rotary drum 5.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an automatic water supply structure in a hose reel type fire hydrant.

(B) Conventional Technology Conventionally, fire hydrants equipped with hose drums have been installed in buildings, etc. in preparation for the outbreak of fires. When the hose is unwound and extended to the fire scene, water is sprayed from the same hose when the hose is unwound.

That is, in the rotating shaft, a rotating cylinder is attached to surround a fixed shaft having an internal flow path, a water supply pipe is connected to one end of the internal flow path of the fixed shaft, and the outer periphery of the fixed shaft is connected to the internal flow path. A water supply port has been installed.

Further, on the outer periphery of the rotary cylinder body, a discharge port is provided that can communicate with the water supply port of the fixed shaft, and one end of the hose is connected to the discharge port.

Furthermore, a sliding cylinder for opening and closing the water inlet is interposed between the rotating cylinder and the fixed shaft, and the sliding cylinder is screwed onto the outer periphery of the fixed shaft, and the sliding cylinder is screwed onto the outer circumference of the fixed shaft. It is configured to be able to slide freely in the axial direction in conjunction with the

In such a fire hydrant, when the hose is unwound from the drum, the rotary cylinder is rotated, and the sliding cylinder is slid by the operation, so that the sliding cylinder opens and closes the water inlet, and rotates. Water is discharged from the outlet of the cylinder.

(c) Problems to be Solved by the Invention However, in the fire hydrant described above, in order to discharge water, the hose is unwound from the drum, the sliding cylinder is slid by the rotation of the rotating cylinder, and the fixed shaft is moved. The water inlet was opened, but if the fire site was close, the hose on the drum was still wrapped around the drum, making it impossible to completely open the water inlet on the fixed shaft.

Therefore, such a fire hydrant has the disadvantage that water cannot be reliably discharged because water is not supplied from the internal flow path to the hose.

(d) Means for Solving the Problems The present invention connects a water supply pipe to one end of a fixed shaft having an internal flow path in the axial direction, and communicates with the internal flow path on the left and right sides of the peripheral wall of the fixed shaft. A main water inlet and an auxiliary water inlet are bored, and the outer periphery of the fixed shaft is surrounded with a certain space by a rotary cylinder equipped with a drum around which the hose is wound, and the outer wall of the rotary cylinder is A discharge port is provided which communicates with each water supply port through a space, and a sliding cylinder for opening and closing the main water supply port is screwed onto the fixed shaft, and the sliding cylinder is connected to a rotating cylinder. The sliding cylinder body is configured to be slidable in the axial direction of the fixed shaft, and a valve opening/closing device for opening and closing the auxiliary water supply port is provided at the other end of the fixed shaft. The present invention provides an automatic water supply structure for a fire hydrant characterized by the following features.

(e) Functions and Effects In the present invention, a water supply pipe is attached to one end of a fixed shaft that communicates with an internal flow path, and a hose wound around a drum is pulled out and extended to the fire site. The cylindrical body and the sliding cylindrical body interlocked with the same cylindrical body are rotated, and the sliding cylindrical body is slid in the axial direction of the fixed shaft by threading the sliding cylindrical body and the fixed shaft, and the outer periphery of the fixed shaft is The main water supply port provided in the main water supply port is opened, and the water supplied from the internal flow path is sent from the main water supply port to the discharge port of the rotating cylinder, and water is discharged from the hose connected to the discharge port.

In addition, if the fire scene is close, when the hose is wound around the drum and the auxiliary water inlet is opened by operating the valve open/close operation provided at the other end of the fixed shaft, the auxiliary water inlet and the rotating cylinder The water supply from the internal flow path is communicated with the outlet of the rotary cylinder, and water is sent from the auxiliary water supply port through the space between the fixed shaft and the rotary cylinder to the discharge port of the rotary cylinder.

Therefore, according to the present invention, even if the main water inlet of the fixed shaft is blocked by the sliding cylinder, the auxiliary water inlet is opened by the valve opening/closing device, and water is supplied from the internal flow path through the auxiliary water inlet. By supplying water to the discharge port of the rotating cylinder, water can be reliably discharged from the fire hydrant without untying the hose of the fire hydrant.

(F) Example An example of the present invention will be described in detail based on the drawings. In the cross-sectional view of FIG. A hose 3 is wound around the same drum 2.

Further, the fire hydrant A is configured to automatically supply water to the hose 3 when the hose 3 is unwound to the fire scene, and its structure will be explained in detail below.

That is, the fire hydrant A has a fixed shaft 4 as shown in FIG.
is surrounded by a rotating cylinder 5, and a drum 2 is attached to the outside of the rotating cylinder 5.

Further, a rotary cylinder 5 surrounding the outer periphery of the fixed shaft 4 is rotatably formed at the left and right ends of the fixed shaft 4 via pivot parts 4a, and is located between the rotary cylinder 5 and the fixed shaft 4. A space S is formed in .

Furthermore, an internal flow path 6 extending in the axial direction is formed in the fixed shaft 4 as shown in FIG. 1, and at one end of the fixed shaft 4,
A water supply lower communicating with the internal channel 6 is formed, and a main water supply port 8 and an auxiliary water supply port 8a communicating with the internal channel 6 are formed on the left and right sides of the peripheral wall 4b of the fixed shaft 4.

The water supply lower is connected to the water supply pipe 1 via the water supply pipe connection part 9.
0 is connected, and the water supply pipe 10 is configured to supply water to the internal flow path 6.

Furthermore, as shown in FIGS. 1 and 2, a sliding cylinder 11 is interposed between the fixed shaft 4 and the rotating cylinder 5, and the sliding cylinder 11 is moved in the axial direction. The main water supply port 8 of the fixed shaft 4 is opened and closed by being slidably attached to the main water supply port 8 of the fixed shaft 4.

The sliding cylinder 11 is a cylindrical body having a certain length, and has a screwing surface 12 formed on the inner peripheral surface of its base end.

Further, the screwing surface 12 of the sliding cylinder 11 is screwed into the screwing surface 13 provided at the center of the peripheral wall 4b of the fixed shaft 4, and by rotating the sliding cylinder 11, the fixed shaft It is configured to be able to slide freely in the axial direction of 4.

Further, as shown in FIG. 1, an opening/closing part 11a for opening and closing the main water supply port 8 is formed on the inner peripheral surface of the tip of the sliding cylinder 11.

In this embodiment, the sliding cylinder 11 is linked to the rotation of the rotating cylinder 5, and its structure will be explained in detail below.

That is, on the outer peripheral surface of the sliding cylinder 11, a thick portion 11b is formed, and an elongated guide groove portion 14 is formed in the thick portion 11b along the axial direction.

Furthermore, a tip 15a of a key screw 15 attached to the peripheral wall of the rotary cylinder 5 is inserted into the guide groove 14 of the sliding cylinder 11.

With this structure, the key screw 15 is rotated by the rotation of the rotating cylinder 5.
The distal end portion 15a of the sliding cylinder body 11 is engaged with the guide groove portion 14, and the sliding cylinder body 11 is rotated as a unit.

Then, due to the rotation of the rotating cylinder 5, the respective threading surfaces 12 and 13 of the sliding cylinder 11 and the fixed shaft 4 are screwed together, and the sliding cylinder 1
1 slide operation is performed.

Furthermore, since the sliding cylinder 11 slides in the axial direction with the tip 15a of the key screw 15 locked by the long guide groove 14, it can smoothly interlock with the rotating cylinder 5. .

Furthermore, a notched recess 1 is provided on the inner circumferential surface of the sliding cylinder 11 at the substantially center thereof.
6 and the notch recess 16 of the slidable sliding cylinder 11
The screwing surface 13 of the fixed shaft 4 is positioned at , and the sliding cylinder 11 is allowed to idle.

Further, in this embodiment, when the main water supply port 8 is closed, the screwing surface 12 of the sliding cylinder 11 and the screwing surface 13 of the fixed shaft 4 are disengaged, and the sliding cylinder 11 is opened. Let it idle.

Therefore, the fire hydrant A can smoothly wind up and pull out the hose 3 while keeping the main water supply port 8 open and closed by idling the sliding cylinder 11.

Further, springs 17 and 18 are attached to the peripheral wall 4b of the fixed shaft 4.
are attached, and the springs 17 and 18 are engaged with the thick wall portion 11b of the sliding cylinder 11, and the springs 17 and 18 are
18 presses the sliding cylinder 11, and the screwing surfaces 12 and 13 of the sliding cylinder 11 and the fixed shaft 4 are easily engaged.

Further, a discharge port 19 communicating with the internal space S is formed in the peripheral wall of the rotary cylinder body 5, and the base end of the hose 3 is connected to the discharge port 19 via a hose connection portion 20.

Note that 21 is a connector for the hose 3 that is screwed into the hose connector 20.

Further, in the present invention, an auxiliary discharge port 8 is provided on the left side of the fixed shaft 4.
A valve opening/closing device M is installed to open and close a.
The valve opening/closing device M is configured to supply water from the internal flow path 6 to the discharge port 19 while the main water supply port 8 is closed, and its structure will be described in detail below.

That is, in FIG. 1, the valve opening/closing device M has a needle 23 that can move forward and backward in the direction of the internal flow path 6 attached to the left end of the rotating shaft 4, and the needle 23 that protrudes from the rotating shaft 4.
A valve handle 24 for operating a needle 23 at the proximal end of the
A circular opening/closing plate 25 for pressing the valve seat 22 is attached to the tip thereof.

Further, a valve seat 22 for supplying water from the auxiliary water supply port 8a is formed in the center of the internal flow path 6, and the valve seat 22 is opened and closed by an opening/closing plate 25 at the tip of a needle 23 that can move forward and backward. It consists of

Further, as shown in FIG. 2, the valve seat 22 has a valve body 22a formed in the center of the internal flow path 6, and an arc-shaped communication hole 22b bored in the circumference of the valve body 22a. ing.

Moreover, a bolt 26 for moving the needle 23 forward and backward is attached to the center of the valve body 22a, and the tip of the needle 23 is screwed onto the bolt 26, and the needle 23 is moved forward and backward by operating the valve handle 24. It is something.

With this structure, when the valve handle 24 of the fixed shaft 4 opens the valve seat 22 of the internal channel 6, the valve opening/closing bag fM communicates with the internal channel 6 and the auxiliary water supply port 8a of the rotating shaft 4. However, water is supplied from the auxiliary water supply port 8a to the discharge port 19 connected to the hose 3 via the space S provided between the fixed shaft 4 and the rotary cylinder 5.

Note that 27 is a mounting flange for the drum 2 provided on the outer periphery of the rotating cylinder 5, and 28 is a mounting bolt for the drum 2.

The embodiment of the present invention is configured as described above, and the water supply pipe 10 is attached to one end of the fixed shaft 4 communicating with the internal flow path 6 to supply water to the internal flow path 6 and the rotating cylinder 5. When the hose 3 wound around the outer drum 2 is pulled out and extended to the fire site, and the release operation causes the rotating cylinder 5 and the interlocking sliding cylinder 11 to rotate together, the fixed shaft 4 is slid in the axial direction of the fixed shaft 4 to open the main water supply port 8 provided on the outer periphery of the fixed shaft 4, and the water supplied from the internal flow path 6 is rotated through the main water supply port 8. Water is supplied to the outlet 19 of the cylindrical body 5, and water is discharged from the hose 3 connected to the outlet 19.

In addition, if the fire scene is nearby, with the hose 3 wound around the drum 2, operate the valve handle 24 of the valve opening/closing bag WM provided at the other end of the fixed shaft 4 to open the main water supply port 8.
The valve seat 22 of the internal flow path 6 between the auxiliary water supply port 8a is opened, and the water supplied from the internal flow path 6 is passed from the auxiliary water supply port 8a through the space S between the fixed shaft 4 and the rotating cylinder 5. Water is supplied to the discharge port 19 of the rotary cylinder body 5.

Therefore, according to the present invention, even if the main water supply port 8 of the fixed shaft 4 is blocked by the sliding cylinder 11, the internal flow path 6 and the discharge port 19 of the rotating cylinder 5 are communicated with each other by the valve handle 24. death,
By supplying water from the internal flow path 6 to the discharge port 19 of the rotary cylinder body 5 through the auxiliary water supply port 8a, water can be discharged from the fire hydrant A in a manner as follows.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a fire hydrant according to the present invention, and FIG. 2 is a sectional view taken along line I-1 in FIG. In the figure, A: Fire hydrant 1: Rotating shaft 2 Ni drum 3: Hose 4: Fixed shaft 5: Rotating cylinder 6: Internal flow path
8: Main water supply port 8a: Auxiliary water supply port 1
1: Sliding cylinder 12.13: Screwing surface 19:
Discharge Ro M; Valve opening/closing device S; Space patent applicant Yoneda Kogyo Co., Ltd.

Claims (1)

[Claims] 1. A water supply pipe (10) is connected to one end of a fixed shaft (4) having an internal flow path (6) in the axial direction, and the left and right sides of the peripheral wall of the fixed shaft (4) are connected to each other. The main water supply port (8) connected to the internal flow path (6)
) and an auxiliary water inlet (8a), and a rotating cylinder (5) fitted with a drum (2) around which a hose (3) is wound around the fixed shaft (4) to create a certain space. (S) to surround the rotary cylinder (5), and an outlet (19) communicating with each water supply port via the space (S) is provided on the outer wall of the rotary cylinder (5). , a sliding cylinder (11) for opening and closing the main water supply port (8) is screwed together, and the sliding cylinder (
11) can be interlocked by the rotation of the rotating cylinder (5), and the sliding cylinder (11) is configured to be slidable in the axial direction of the fixed shaft (4). Auxiliary water inlet (8a) at the end
An automatic water supply structure for a fire hydrant characterized by being equipped with a valve opening/closing device (M) for opening and closing.